Results 21 to 30 of about 69,703 (289)
Effect of pulsed magnetic field pre-treatment of AISI 52100 steel on the coefficient of sliding friction and wear in pin-on-disk tests [PDF]
, 2014 Disc specimens manufactured from commercial bearing rollers (AISI 52100 steel, 62–63 HRC) in initial state and after pre-treatment by pulsed magnetic field (PMF) with a magnetic field strength of 1–7 MA/m were tested with sunflower oil using pin-on-disk ...
A A Lebedev +24 more
core +2 more sources
Analysis of Permanent Magnet Motors in High Frequency—A Review
Applied Sciences, 2021 Electric drives consume a great amount of the world’s energy, and it will keep increasing due to the electromobility trend. Thus, the efficiency of electric drives must be improved to reach the desired sustainability goal.
Yerai Moreno +4 more
doaj +1 more source
Performance of common-mode chokes [PDF]
, 2010 A low-cost method for experimental investigation of common-mode chokes for reducing high-frequency motor ground-currents of inverter-based drive systems of several hundred kW is presented.
Heng, Bee See, Muetze, Annette
core +1 more source
Interplay between Josephson and Aharonov-Bohm effects in Andreev interferometers [PDF]
, 2018 Proximity induced quantum coherence of electrons in multi-terminal voltage-driven hybrid normal-superconducting nanostructures may result in a non-trivial interplay between topology-dependent Josephson and Aharonov-Bohm effects.
Dolgirev, Pavel E. +2 more
core +4 more sources
Energies, 2020 Adjustable speed drives use Pulse Width Modulation (PWM) to switch DC-bus voltage for the synthesis of three-phase voltages to provide power to the permanent magnet synchronous motor (PMSM).
Muhammad Aqil, Jun-Hyuk Im, Jin Hur
doaj +1 more source
A cascaded H-bridge BLDC drive incorporating battery management [PDF]
, 2007 A multilevel BLDC drive is proposed using cascaded H-bridges with isolated sources to provide superior output waveforms and reduced current ripple whilst incorporating observer based SoC estimation.
Bingham, Chris +3 more
core +1 more source
Method of Limiting Shaft Voltages in AC Electric Machines
Energies, 2021 The article presents a new method of counteracting shaft voltages and currents in AC electrical machines. It is based on the use of an auxiliary winding located in the stator of the machine.
Sebastian Berhausen, Tomasz Jarek
doaj +1 more source
Radio-frequency-based detection of electrical discharge machining bearing currents
IET Electric Power Applications, 2011 The possibility of a bearing damage caused by inverter-induced bearing currents in modern variable-speed drive systems is well recognised at present. In this study a non-intrusive method to detect and monitor the frequency of occurrence of these currents is presented.
J. Ahola +3 more
openaire +1 more source
Applied Sciences, 2023 To research the deterioration of the mechanical properties of stirrup-corroded concrete columns under the effect of load and chloride, accelerated corrosion and load carrying capacity tests were carried out on concrete columns subjected to long-term ...
Xiaoping Zhong +6 more
doaj +1 more source
Analysis and Control of Slotless Self-Bearing Motor
Actuators, 2019 A self-bearing motor (SBM) is an electric motor with a magnetically integrated bearing function, that is, it can provide levitation and rotation simultaneously as a single actuator.
Huy Phuong Nguyen +4 more
doaj +1 more source